Field-watering plant



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- Appl i cation filed "Octqben112 1'1925 ,serial no 62,070,*and in'iGe'rniany Julyr l, i eaiii it plants [comprising a 'subterranean;'Jpipe sys- .tem. into which the water is forced 'and :from which the water is. taken throughv tapping pipes connected totheasaidsystem and Edistributed over .the field jto. be ,watered. The inventionvrelates more particularly tow-field watering-plants of this kind in which the water; is supplied to the subterranean pipe system at a comparatively high pressure, that is a 1 pressure .of s'everall atmospheres.

In pipe systems or networks ofthis kind it is highly importantgthat alldanger of water hammers or 'suddenfrisesjofpressure are obviated in the periodic spouting of water from the pipe system. Foreconomical reasons it is also extremely important-to enable the tapping pipes through which the water is taken from the subterranean net-- work to be closed ing devices.

These objects are, accomplished by the present invention by providing a valve that p is, adapted to be closed at-all pressures .at only one point in the pipe' system, :viz, between the subterranean distributing pipe system and the pump that forces water into the same while all the tapping pipes dis tributed over the fieldare' closed by single covers of any known or suitable kind which can only beclosed when there s'no pressure vin the subterraneannetwork, it e. when the pump is out OK from by the said valve. 7 U H The invention is 1 diagrammatically -illus-. trated in the drawing in Whichi Fig. 1 shows the generalfarrangement or the said pipe system lay-out of the pipe systemconnected to the pump and Fig. 2 is a sideview, pip es f distributed over.

of one of the tappingthe field. I I

In'the held to" be watered a system of pipes is buried which may consist of amain l pipe -h and branch pipes d g at rightangles from the main pipe and placed about 100 yards apart from each other. At points spaced about. 100 yards aparteach branch pipe g'isprovided with vertical tappingpipes s that extend above the surface of the ground. The water or liquid to be sprinkled over the field is forcedinto the main pipe h andthe branch pipes g by a pumpp which takes clear water from a pipe 7c andsewerage water or liquid manure or the like from a pipe 1* alternately.

y ap a d Simple clo sp .tierranean-1;p pe system' isla' single valve: a- Y under-pressure, ie when the pump go is P1 cut off fromthe subterranean pipe network by the'valve a. 0:6 course it might be possjible to place the covers d or other, removal closure means in position while thewater was issuing under fairly high pressure from the pipes abut vit would, require special apparatus to do this and wouldresult in the thorough wetting ofthe operator so thatjfor all practical purposes it is true that in applicants system the closure means cannot be emplo-yedto stop the flow of liquid through the pipes except after this flow has lfirst been cut ofi" at the valve a. l

. The coversd per se are well known and the invention consists only in arranging the systemso that not a single valve that can be closed while the water is under pressure needs to be'provided beyond 'the valve a which isopened to connectthe p-ipe system to the pumpwhen the latter is operating.

" :By "providing" closing members in the are obliged to proceed in the tollowing man "The sprinkler or water-throwing device form of "covers d' on the tapping pipes s i the operators using thev field-watering plant which may consist of a water-ejecting noz- 'zle'rotated about-avertic'al axis by a mo tor-andonly; one of which is provided for theentire network, is connected to one of 1 the numerous tapping. pipes 's whilst the valve a is closed so as to cut all pressure oft the :pipe system I, g'. "The cover-d of a tapping pipe isremoved and thesquirting de-.

operator at the sprinkler or squirting devicethen gives ja signal, as'a radio signal, -to the operator at the pump and the latter "field; When the squirt operator desires to 'stopsquirting. he again gives a signal and vice or sprinkler'is connected to'the tap ping pipe .9 ingplace of the cover d. The

g r v 1,603,110

the pump operator closes the Val-N e {a GI stops the pump. Pressure 21's: thus out off from the subterranean pipe systein and all danger of sudden excessive pressure,in the; pipe system is obviated. The squirting de-' Vice is now disconnected from the tapping;

pipe 8 andthe cover (Z is replaced whereupon the squirting device :is ttaken'ito ithe next pipe 8 tobe used Where the operations alreadyadescnibed 3126- repeated. As the .;distributing:pipe-systeni 11311311113 secured-against Water hannnersi r sudden excessive water [pressures .zcoinparativeiyflight and cheap pipes :can' *be used, =5I l1e omission of numer ous valves that ean'ibe operated at a :high

' pressure also imesuilts in a :g'reat saving :in

the costs ogfithe plant. a

"iliolaimr V ilhe herein described iinnigation ;apparatus COBHDBiSi'Hg, in .eombinationgmeans for supplying liquid continuously under coin -llcl-iilfihwiy fhigh pressure a main .condult wleadingutrom said supply means, a Valve in sa d conduit,"a plnrality o fyalveless branch "conduits of 'inuch 'ligh'tei' Construction than sai dvn ain onduit, each connected thereto at one end, closed at its 0ther end, and haviing {a ;m-ltiti;13l1 ieity eo'rf .epaeed apar t .discharge open ngs n 1ts upper Wall, and a removable elosure means for eachtsuchydieoharge openadapted to be applie d only when the anain supply kpressuiie {is out oft, whereby any jproduetion pt a Water "hammer 1 effect in said w eak e r bmnohz conduits is avoided Abe- 

